Fbank m



(No Model.)

F. M. CLARK.

SAW HORSE.

ate ed A111 m-Lixnn n lwr, Washmglan. D. c.

NITED STATES PATENT OF ICE.

FRANK M. CLARK, OF BOSTQN, MASSACHUSETTS, ASSIGNOR TO THOMAS HAVLEY, OF SAME PLACE.

SAW- HORSE.

SPECIFICATION forming part of Letters Patent No. 368,192, dated August 16, 1887.

Application filed May 4, 1887. Serial No. 237,040. (No model.)

cation, in which- Figure 1 is an isometrical perspective view of a sawhorse embodying my improvement, and Fig. 2 a vertical transverse section of the same taken through the center of Fig. 1, on the dotted line 1 1, certain parts being shown in side elevation, and the horse represented as in use.

Like letters of reference indicate corresponding parts in the different figures of the drawings.

My invention relates more especially to means for holding the stick of wood firmly in its seat on the saw-horse while being sawed; and it consists in a novel construction and arrangement of parts, as hereinafter more fully set forth and claimed, the object being to produce a more effective and otherwise desirable device for this purpose than is now in ordi nary use.

The nature and operation of the improvement will be readily understood by all conversant with such matters from the following explanation:

In the drawings, A represents the body of the saw horse or buck, and B a stick of wood. The body is of the ordinary form and construction usual in saw-horses of this description, excepting as hereinafter described. A horizontally-arranged rod, 111., is secured to the legs 10 at the rear of the bodyA, immediately above one of the lower stays or tie-rods, v, and around said rod is coiled a spring, at, having one of its ends attached to the leg 20 and the other to a clamp, 3 journaled on said rod.

To the main tiered f, near the right-hand side of the body A, is secured a chain-loop,E,

.out a more explicit description.

by means of staples g, and within said loop is disposed a vertically-arranged hook, D, provided at its upper end with a sharp point, i, for penetrating the stick of wood,and having its lower end hinged at d to the end of a curved arm or red, O, as best seen in Fig. 2. The clamp y is provided with a loop, .7, through which the arm 0 passes, and with a set-screw, a, for adjusting the arm, said arm being preferably bent in the arc of a circle corresponding with the are through which the hinge dpasses when the hook D is raised or lowered.

In the use of my improvement, the stick of wood B having been placed in position on the sawhorse, the operator raises the hook D until the point t rests upon the stick, thereby raising the hinge d, causing the arm 0 to turn the clamp g on the rod m and tighten or wind up the spring 0c,which acts-torsionally to constantly force the arm 0 downward, thereby drawing the hook down firmly against the wood B, and holding it securely in position in a manner which will be readily obvious with- \Vhen the wood B is removed from the horse, the hook D is prevented from falling to the ground by the loop E, and the free end h of the curved arm 0 strikes against and is held up by the rod 0, the hook, arm, and clamp then occupying the positions shown by the dotted lines in Fig. 2. The chain E being flexible, renders easily and permits the hook to be raised and lowered readily without cramping.

I do not confine myself to seeming one end of the spring at to the body A, as it may be secured to the rod in and perform the same function.

Having thus explained myinventiomwhatl claim is 1. In a saw-horse, the rod or, provided with the clamp 31 and spring 00, and the hook D, provided with the curved arm 0, hinged thereto at its lower end, combined and arranged to operate substantially as described.

2. In a saw horse of the character described, the combination of the following instrumentalities, to wit: a body, a rod arranged horizontally between the rear legs of said body, a clamp provided with a loop and main tie or center bar of said ioody for supjournaied on said rod,a spring coiled around porting said hook, substantially as set forth. said rod and having one of its ends secured to said clamp and the other to said body or to FRANK CLARK the rod, a curved arm disposed in said 100p, Witnesses:

a vertically-arranged hook hinged to the end 0. M. SHAW,

of said arm, and a chain-100p secured to the E. L. SAWYER. 

